Dough-raiser.



E. C. MEYER.

DOUGH BAISER.

.11PPL1c/111o11r1112n SEPT. 18. 1913.

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FFIFF.

n Enit/init C. MEYER, or BooivvrLLE, MISSOURI.

DOUGH-RAISER.

. Specification of Letters Patent. Pgjtntd Dec, 1ML, 1915,

`Implication iledjseptember 18, 1913.V Serial No. 790,537.

tion, such as will enableothersl skilled `in the artfto which itappertains toinakeand use the saine'- i This invention relates vtodoughraisers and has for an object to provide a device of this characteremploying" novel regulating means'for controlling the heat.

A further object lof the invention is to provide a novel lue wherebywhen thedamper is closed the heat is returned down the flue outside oftheheaterchimney.

A still further objectl is to provide a no vel baffle inthe,heating-chamber, for 4dieflecting the heat laterally.

IV ith the above objects in view the in vention consists of certainnovel details of construction and combination of parts hereinafter fullydescribed and claimed, it being understood that various modificationsmay be made in the minor details of construction within the scope of theappended claim.

In the accompanying drawing illustrating this invention Figure 1 is afrontV elevation of the dough raiser. Fig. 2 is a longr tudinalsectional view on the line 2-2 Fig. 1. Fig. 3 is a cross sectional viewon the line 3-3 Fig. 1. Fig. 4 is an enlarged side elevation showing theheat controlling device. Fig. 5 is a cross sectional view on the line5-5 Fig. 4. Fig. 6 is a fragmentary longitudinal sectional view throughthe iiue with the damper closed showing the return of the heat outsideof the heater chimne Y.

eferring now to the drawing in which like characters of referencedesignate similar parts, the device is shown to comprise a substantiallysquare open top shallow casing 10 that is supported at the corners uponlegs 11 and is closed by a depressed cover. 12 within the depression ofwhichthe heating chamber 13 rests, the latter being preferably formed oftin, and being designed to contain the bowl of dough to be raised, ortins in which the dough may be raised, as desired. Both the heatingchamber and the casing are provided with respective doors 14 and 15through Vwhich they interiors may be used.

. v"In connection with the invention, an ordi nary lamp 16 may be usedasa heater, the lamp being equipped with an ordinary chiinlney 17, andpreferably the lamp is placed' upon the floor underneath the casing andbetween `the legs thereof, although it may be placed upon any desiredsupport, in this location.

In carrying out my invention, I provide a flue 18, having an outer wall19, and an in* ner wall 20, thewalls being connected at they'top by aperforated closure 21 and at -the bottom by a perforated closure 22,there being a funnel-shapedmouth 23 attached to the.L outer wall andprojecting through an opening 24 formedin the bottomof the casing. fThe4lamp chimney is centered at the bottom of the flueso that the heatpasses kupwardly through the inclosure of theinner "walll20 of the flueand escapes throughthe mouth 23 into the casing. A damper which will bepresently described is disposed within the casing above the mouth andwhen closed tight down on the mouth, the heat will be turned thereby andpassed downwardly between the inner wall and outer wall of the Hue,finally escaping through the perforated closure 22 at the bottom of theflue, outside of the lamp chimney whereby the operation of the lamp isnot obstructed.

For regulating the heat, I provide a thermostat disk 28 that issupported within the casing by means of a U-shaped bracket 29, thelatter being attached by means of a. tube 30 that enters an opening 31in the bottom, there being a pin 32 projecting through this tube andbearing upon the thermostat, this pin extending below the bottom. Abracket 33 of inverted U-shaped form is secured to thel bottom, therebeing an opening 34 in this bracket that receives the pin 32. A lever 35is provided with a flattened end 36 that is pivoted as shown at 37 tothe legs of thebracket 33, there being a set screw 38 threaded throughthis liattened lend and supporting the pin 32. A weight 39 is fixed tothe outer end of the lever. Fixed to the flattened end of the lever isan upright bracket arm 40 that projects through an opening 41 in thebottom of the casing and is terminally equipped with a damper 42arranged above the flue mouth 23.

ict

126V casing,` I provide'an arched baffle plate 4:4

In operation the dough to be raised is v placed in the heating chamber13 in a bowl or in tins as desired, and the lamp lighted. The set screw38 is then adjusted so that the thermostat will maintain the damper inthe proper position relatively to the flue to ymaintain the' desiredtemperature in the heating chamber. Upon av fall in temperature, with aresultantcontraction of the thermostat, the weighted or counterbalancedlever will sink at the weighted end with a resultant lifting of thedamper to let in `I'norehea-t until the normal temperature is restoredinthe heating chamber whereupon 'the thermostat will expand and returnthe j parts to normal position.

Upon the temperature rising to such a degree that complete cl'osing ofthefdamper takesplace, the heat from the burner will be deflected backdown the flue as above described, outside of the burner chimneyv so thatthe burner will not be extinguishedl or its operation interfered with inany manner. l

For deflecting the heat laterally in the the same being secured at oneend to the casing and being provided with V-notches 45v inthe oppositeend through which the heat may escape. A cover plate 46 is dis- Copiesof this patent may be obtained for posed within the casing to house thethermostat; as shown.

From the above description it will be seen that I have provided anextremely simple and inexpensive dough raiser that will be effective inoperation, and may be formed I of the casing, the end of said baiieplate adjacent the side of the casing remote from the heating devicebeing turned down into engagement with the bottom of the casing andprovided with V-notches forming heat escape openings.

In testimony whereof, I atlix my signature, 1n the presence of twowitnesses.

ELMER C. MEYER.

Witnesses:

C. W. WHITLow, W. C. LAUER.

ve` cents each, by addressing the Commissioner of Patents.

Washington, D. C.

